Cement building-block.



PATIINTBD Nov. 20, 1906. VIIIIIIIIILD & A. v. CRISI. GIIMBIII BUILDING BLOCK.

APPLICATION FILED 00T.10, 1905.

y' No. 836,589.

- WITNESSES:

miits .iat/ins Lawinen COLUMB. CANADA.

GEEUEENT BlllLDlNGwBLQQK.

specification of Letters Patent.

Eatented. Nov. 20, i906.

Application led October 10,1905. 'Serial No. 282,120.

Be it known that we, JAMES ,lniririnLn and ALBERT V. CRISP, citizens oi' the Dominion of Canada, residing at the city oi' Vancouver, in. thelProvinee of British Columbia, Canada, have invented new and. used'inprovements in Cement Building-Blocks, o f which the `tol-- lowing is a speeilication. y

Uur invention relates to a ceinentbuildinglbleek having` an outer and an inner wall con neoted together by met-al bonds and preserving,l an air-space between the walls.

The preservation ot' an air-space in a cement or concrete wall is generally adn'iitted to be an advantage. as it not only lightens the structure and eeononiizes material, but the air-spaee tends to keep the house cooler in summer and warmer in i'vinter and also cheeks the passage of moisture from the outer to the inner wall. The advantages of an air-space have been sought for in. the 'use ol cellular blocks of various kinds; but where the connecting-bond between the outer and inner wall of the block has been ot the material ol the brick itsell the advantage has only been. partial, as n'ioisture will permeate at the bond` or tie, and, further, the cellular strueture does not insure the l'nll ventilation ol' the intervening air-space necessary to a dry inner wall. 'lo overcome these objections, we have designed the block which is the sub Iject of this application and have introduced into 'the structure a tie or bond of sheet metal and have adopt-ed 'a 'forni of tie thxl `t is simple and cheap and enable the cement to be etl'eetually bonded together through the tie where it is embedded in the cement or mncrete of the two walls, so that their introduction so tar from weakening the walls reinforces them..

The )articular construction and advantages ot the invention are fully set forth in the following,r specification and illustrated in the draw ings wliich accompany it, in which"H l Figure l is a plan, and Fig. .2 an end elevation, of aplain wall-block; Fig. 3, a plan ot' a corner-block, showing the modified application of the same bond; Fig. 4, a perspective view ol? the metal bond, showing also the means for attachment ot a eorner-boi'id; Fig. 5', the end of a corner-bond, and Fig'. 6 a niodilied cheaper iorin ot the bond.

ln `the drawings the outer wall of the bleek is represented by 2, and the inner by 3,

and i indicates the .metal bond member be tween them. This bond 4 is made of thin sheet metal, preferably ol steel or iron, and. the ends are bent round, as at 5, to afford a hold in the walls. To obviate a straight line of weakness at the ends of the embedded portion of the bonds, they maybe sheared, as at 6, with a curved or irregular outline, and to insure that the integri ty of the walls 2 and 3 does not dependv on the adherenceof the eernentto the faces of the metal bond the bond. member is before bending pierced with two or more preferably elliptical apertures 7, through which the cement will bond 'itsel'il with that on the other side of the metal and forni an integral and reinforced strueture, or the saine may be attained in what is a seinewhat simpler manner by the alternative eenstruetion illustrated in Fig. 6. ln this the ends of the ties 4 where embedded i'n the eement of the walls 2 and 3 ol' the bleek are sheared well up toward the center, and the strips 12 so formed, are oppositely spread alternately 'and bent approximately to the iaee planes of the block. The spread of the strips is preferably carried into the air-space between the walls, as illustrated in the application, to one end of Fig. 3, so as to `form a diagonal brace endwise oit the bleek.

If considered desirable, the metal may be of very light page and rigidity imparted to it by corrugations without departingl freni the spirit of the invention. To avoid the nossibonds may. be galvanized or dipped. when het in tar or-otherv preservative material.

ln corner-bricks, as illustrated in Fig. 3, an aperture 8 may be 'piereed toward one edge of the interspaee portion of the bond and sheared and outwardly-turned projections 9 be provided toward the other edge. Gppositely correspondingl apertures and proj eetions being provided in the bent portion i0 of the eorner bond-plate il, when brought together the outwardly-turned projections of one piece will enter the corresponding aper-v ture in the other and being clenched on the other-sidel will secure the corner-bond El to the ordinary bond 4.

l/Ve are aware that prior to our invention a metal bond. hasbeen used in a cement/or concrete block; but such has either been used merely as reinforcement of the block witho'u t ble obiection of corrosion of the metal, the

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dis ensing With e cement bond between the weils, or, Where this has not been the ease, the metal structure of the bond has either `been so elaborate and expensive in de n as been of heeded round iron, which is not an .economie use of the metal, nor does the bond contribute to the strenfrth of the block.

Having 110W partieularly described our invention, We hereby declare that vwhat We claim as new, and desire. to be protected in by Letters Patent, isl

l. A building-block, Consisting of e. pair of cement block members 2 and 3 .in combination with metallic ties 4 having their ends 5 bent-over et right angles to the body portion of the tie and embedded in the cement blocks 2 and 3, seid metallic tie having its bent-over edges provided Withelongeterl apertures extending in the same direction es the longitudinel exis of the tie member, substantially es shown and described, y

2. A bond for nement bui1ding-blonlrs, comprising n. sheet-metal member having its ends bent over et en tingle to the body portion thereol", seid bond having tangs stamped ,up from the body portion thereof, and e stity member having en epertured portion through shown end. described whieh seidtengs ere adopted to pass to seeure the stoy to the bond, substantially es 3. In e tie for building-blooks of the cheraeter stated, e bond having en aperture, and e stay having e plurality of prongs stamped i from the same adapted to pass through the to be generally prohibitive, or' the bondsI eve bond-aperture :ind to be bent overy to secure the stay and bond together.

4 ln a device. of the class described, a bond eonsis'tingi of a sheet-metal member having .its ends bent over at an angle to the body portion thereof and provided with a lptir of apertures in said body portion, end tongs stamped up from the body portion at one of said apertures, and a stay eonsisti'ngof e body portion and having its ends bent over et right angles thereto, one of seid steyv ends having e petit' of apertures and prongs or tengs stamped from' seid ends at one of seid vapertures, the 'prongs in the stay adapted to pees through one of the apertures of the bond end 'those ot the bond to pass through the other epert'ure of the stay, seid prongs adapted to be bent over to secure the bond and. stay tooether, substantially es shown and described.

In. testimony Wiiereoic We heve signed our naines to this speoiiioation in the 'presence of two subscribing Witnesses. s

' LAYFHELD,

ALBERT v/CRES? Witnesses:

ROWLANI) B RITTMN, Fn'nnn QUINN. 

